Monthly evidence snapshot · checked August 4, 2026
Six portable power stations from the current Power Preflight catalog, compared from official manufacturer pages. This is a published-spec and displayed-price snapshot, not a hands-on test or a measured-efficiency ranking.
Read this first
Promotional prices and stock labels can change minutes after a check. Sold-out prices stay visibly labeled, contradictory availability stays “unclear,” and a missing current price stays blank. EcoFlow’s U.S. DELTA 2 URL now redirects to the DELTA 3, so this snapshot does not reuse an older DELTA 2 price.
No single ratio names a winner. Capacity value, inverter output, surge headroom, portability, support, and actual availability answer different buying questions.
August 2026 snapshot
“Planning Wh” applies the same common 85% × 90% = 76.5%scenario to every label. It is not measured conversion efficiency or tested usable energy.
| Station | Official price display | Label capacity | Planning Wh | Continuous output | Explicit surge | $/100 label Wh | $/100 planning Wh | Continuous W/100 label Wh |
|---|---|---|---|---|---|---|---|---|
| EcoFlowRIVER 3 | $199Displayed direct priceAvailability unclear | 245Wh | 187.43Wh | 300W | 600WSurge (published separately from X-Boost) | $81.22 | $106.18 | 122.45W |
| JackeryExplorer 300 Plus | $299.99Displayed direct priceSold out | 288Wh | 220.32Wh | 300W | 600WMaximum instantaneous output power | $104.16 | $136.16 | 104.17W |
| JackeryExplorer 600 Plus | $429vs $499Displayed sale priceSold out | 632.3Wh | 483.71Wh | 800W | 1,600WMaximum instantaneous output power | $67.85 | $88.69 | 126.52W |
| EcoFlowDELTA 2 | UnavailableNo current direct priceNot offered directly | 1,024Wh | 783.36Wh | 1,800W | 2,700WSurge | — | — | 175.78W |
| AnkerSOLIX C1000 | $449Displayed direct priceAvailable | 1,056Wh | 807.84Wh | 1,800W | 2,400WAC Surge Output | $42.52 | $55.58 | 170.45W |
| JackeryExplorer 2000 v2 | $799vs $1,499Displayed sale priceAvailable | 2,042Wh | 1,562.13Wh | 2,200W | 4,400WSurge output | $39.13 | $51.15 | 107.74W |
A dash means the price-based metric was intentionally not calculated. Published surge is included only when an official source explicitly labels a surge, peak, or instantaneous output; a boost-mode claim alone is not substituted.
Reproducible method
Ratios are rounded to two decimals after calculation. Taxes, shipping, coupons, member-only discounts, third-party prices, bundles, and affiliate prices are excluded. Seehow Power Preflight estimates runtime for the broader model.
Source register
Every source was last checked on . Product and specification links are separated when the manufacturer publishes them in different places.
EcoFlow
The official page displayed $199 and an Add to cart control, but also showed Sold out and pre-order language. Price is recorded; availability is intentionally marked ambiguous.
Displayed direct price and technical specifications from the official U.S. product page; contradictory stock language is preserved rather than resolved by inference.
Jackery
The official U.S. product page displayed $299.99 and “Sold Out.” The ratio records that display; it is not a currently buyable offer.
Official product/price sourceOfficial specification source
Price and availability from the official U.S. product page; capacity, continuous output, and instantaneous output from Jackery Support.
Jackery
The official U.S. product page displayed $429 against $499 and “Sold Out.” The ratio records the displayed sale price, not an available offer.
Official product/price sourceOfficial specification source
Price and availability from the official U.S. product page; 632.3Wh, 800W continuous, and 1,600W instantaneous output from Jackery Support.
EcoFlow
The official U.S. DELTA 2 product URL redirected to the DELTA 3 on August 4, 2026. No current DELTA 2 direct price is used.
Official product/price sourceOfficial specification source
Current direct price unavailable because the official U.S. product URL redirects to its successor; specifications remain available in EcoFlow’s official DELTA 2 manual PDF.
Anker
The official product page loads its visible price client-side; its current structured Product offer reported $449 USD and InStock.
Price and availability from the official page’s structured Product offer; capacity and output values from the same page’s technical specifications.
Jackery
The official U.S. product page displayed $799 against $1,499; the base product endpoint reported inventory available at the observation time.
Price, availability, label capacity, continuous output, and surge output from the official U.S. product page and its product endpoint.
Freshness policy
Before each monthly release, re-open every official manufacturer source, re-check price type and availability, and regenerate the CSV from this typed snapshot. Promotional prices may change at any time.
Factual corrections update the page and CSV together, preserve the original observation date, and add a dated correction note. Ordinary price changes belong in the next monthly snapshot and do not rewrite this one.
Corrections logged for this release: None.